Tractor disk harrow



Patented July 28, 1925.

1,547,796 urli-Tinld STATES? PA'rrNTl voFFicisi.

WILLIAM c. iiwYnR, or AUBURN, 'NEW YORK, AssIGNoR rro iNrnnNnrioNAn HanvEsT'EitcoMPnNY, A CORPORATION or `NEW JERSEY.'

Application filed June 29, 1921. Serial No. 481,22.

ToaZZ whom t may concern.'

a citizenV of the'United States, residing at Auburn, in the county of Cayuga and State of New York, have invented certain new and` useful Improvements in Tractor-.Disk I-Iarrows, of which the following is a full, clear, and eXactspeciiicat-ion. Y

This invention relates to harrows, particularly those designed to be drawn vby tractors. f

It is an obj ect of this invention to provide a harrow which can be .angled or straightened by .the movement of the draftpower. Another object .is to provide a harrowv possessing a high -degree'of flexibility. As harrows'of` a typev to be drawn by tractors are quite large and have a wide reach, any

unevenness in the*` ground*v will affect themv more than would be thecase with the smaller.

types which "are drawn by horses. l'

These -and other objects', as will appear from the following specification, are accomplished by my :invention v,which comprises a harrow having a frame, disk vgangs thereon,rmeans for angling; said gangs, bearing means between-the inner ends of said gangs, and said framelimiting'the upward swingV of said gangs, thegangs being free-.to swing down to ground. r Y Referring now Ato ythe drawings, l

Fig. 1 is aplan view. of my invention vas applied toa 'smgle unit liarrow shown in a straightened'position;

' Fig. 2 is aY verticali,'longitudinal section'A near the center line of Fig. 1;

Fig. 3 vis apartial View similar to Fig. 1 with theharrow disk gangs angled;

Figs. 4 and 5 are fragmentary d the h arrow frame.

I have-.illustrated my 'invention lin connection with a single section harrow having a frame' made up vof av U-shaped member 10 which is bolted to a rear bar-11. This rear bar carries brackets 12 which in turncarry bearingsY 13 which are hingedly mounted thereon and have journaled therein the disk gang shafts 14. The bearings 13 are further supported from the main framemember 10 by meansV of brace rods 13*1 pivotally attached to the bearing and rods 13b pivotally attached to the disk gang frame 33 at a point immediately over the bearing 13.

Near the center of the U-shaped member aus .of

follow the .zundulations' of the' 1() and on its underside are-secured vclips Be it known that I, WILLIAM C.V Dwrniz,

15 and 16 which slidably' receive the draft frame or tongue composed, in this instance.

vof ya pairof angle bars 17. These draft angles 17 in an adjusted position to theI barrow frame. j Preferably the Vteeth 19a are formed to lock onv forwardvmovement ofthe Gor draft ytongue and to ride over the bar 10 on y backward movement.. Avmeans foroperat; ing this latch fromvthe' tractor .is provided'r such as the footlever 21attached thereto. U-shaped guide 221is secured between the draft angles 17 in suchva way as toform agslot 23. Connection isY made between .the`

inner ends ofthe gangsglt land thefdraft angles l7jb'y 'means ofv connecting links 214l and 25, the vlatterof. which is preferably bent so as to pass through and be slidable in the slot 23. Carried by this samerbentf,

member 25 are two pressure bars 26 which arealso hingedly connected to theinnerj endsv of the ganfr'framesl 33. l These frameshavef uprights 27 which are secured to the inner ends vofthe diskgangsthrough the bearings 28,` as shown in Fig. 2. TheV bars 26 extend back andlbear upon rollers/V29y which are mounted by means Aof bracketsv 30 onf the rear frame member 11.

An adjustable clevis 31 carried byv member 32 which is secured to the 4draftva11gle--17- is shown for attachmentv to a tractor. i.

It `will be seenjfrom-Fig. 2 thatk w'henvthe gangsare lstraight and the tractor is backed, thedraft angles-17 will, automatically slide` back across the frame members 1 0 and llbe- 1 causel of the ratchetA action .ofl the latch .19, but because of the slot 23 no thrust will be given the inner ends of the gangs through the links 24 and25 by the backing action. Consequentlyv the harrow gangs will remain straight during thebacking action.

As the barrow is drawn forward, however, the action of the Vground upon the p inner end of the disk gangs will tend to -angle the gangsl as shown inFig. 3, and the inner ends of the gangs will then drop back until the bent end of the link 25 strikes the rear end of the slot 23, as shown in Fig. 3. It will be seen from this that the am'ount of the angle of the disk gangs depends upon the `setting of the latch 19 with respect to the 'U-shaped member l0. If, as the harrow is drawn forward, it is seen that the angle is too great it can be straightened by raising latch 19 by the foot lever 2l allowing the frame to engage in another. notch.

It will be seen, therefore, that the angle of the Agangs is vset Sdu-ring theoperation of backing, while 'the :gangs themselves during this operation `are 'maintained in `a straightened position, vand that on the forwardpullfthe gangsarfe made to assume the angle so set. It will also be 'observed that no means is provided for holding the vinner endsY o'f ithe disk gangs up aga-inst the gui-des, as in 'an out-throw harrow no fsuch means is vrequired, vasthe tendency of .the inner ends of the fgangs is to fraise. Rollers 29 arer provided, however, `to take `the upward thrust of -theinner ends of the disk gangs; Vhen the tlraftftongue is ydrawn forward to straighten 'the'gangs, the latch 1-9 is lifted, allowing it -to slide forward in the frame, carrying with it the U-shaped guide'22, and

as the bent lmember 25 is Aatlthe rear of the slot 23 the gangs are pulled forward, thereby straightening the fgan'gs. p

-Becausegof my method of mounting these 'gangsonthe main frame-as wellfas their attac'hment to the v'draft means, I have provided A'a*disk h'arrow Of unusual iie'Xibili'ty which permits it to readily adapt itself `to any unevenness in the soil -in which vit is operating'.Y Y

rYVhile I vhave V2in the above 'specification described certain speciiicembodiments of my invention, it should be understood lthat I ydo Vnot intend to limit myself to the particular constructions illustrated, but that modifications yand, changes maybe made without departing :from ithe spirit 4'and vscope of the invention l as 'expressed lby the following claims: e Y

Vil.' Infafh`arrow,fa mainframe, including a transverse jmember having a vertical flange, diskV gangs hingedly mounted thereon, a draft frame-slidably mountedlon said v-main frame and Ipassing bene-ath said transverse member, angling connections between said draft frame and the Y'disk' gangs, and va ratchet jbar pivoted atone end on fthe draft frame and positioned for engagement with said vertical flange. Y

2. In a harrow, a main frame including a transverse member having .a verticalflange, disk gangs .hingedly .mounted thereon, a

draft frame slidably mounted on said main 3. In 'a' rharrow, aimain frame including front .and rear transversefm'embers, the front member having avertical flange, dziskgangs hingedly im'ounted on the frame, Ya adrafft frame slidably fmounted `beneath 'said mem-f bers, angling links connecting saidl drafty frame with the `disk gangs, 4Vpressure `:bars pivotally connected Vto `said draft frame and gangs 'and engaged beneath said rear Aframe member, and a :.ratchetxbar pivoted at -one end on Vsaid draft lframe =andfpositioned for engagement with said vertical flange.A

4. Ina harrow, vafmai'n frame iinclndingfa plurality of transversey bars, V-:diskgangs hingedl-y mounted 'on said iframe, :a draft frame slidably :mounted Jbeneathwsaid bars, angling connections between :said draft frame and Vv.the.ig'angs,;p ressure bar-sconnected to said draft .frame :and :gangs and m'ovab'le in 'engagement with :one ,of :said v 'bars,vand adjustable gang lockingl smeans mounted on said fdraft VAframe comprisingV a flatch-bar pivoted onthe draft frame andicoo-perating with 'another of said transverse ibars .to hold the gangs in .desired iposition.

5. In a liarrow, a main frame, a disk ggang hingedly mounted` thereon, a draft .frame slidable lback Yand forth across said Vmain frame, fan angling connection between said draft frame and thezdiskfgang, Aand :an Vvadjust'able gang lockingmeans vcomprising a ratchet bar pivoted ait ione :end :on the draft framerand ha-ving yits toothed edge traveling over .a flanged element fon the mainframe and adapted -ito permit .-freemovement-foffthe draft frame in onedirection. l Y

In testimony whereof EIv -a'iixmy :signature. v

YC. DWYER. e 

